are conscious and voluntary.

[Sidenote: Scope of Mind Power]

_The fact is, every mental state whether you consider it as involving an
act of the will or not, is followed some kind of bodily effect, and
every bodily action is preceded by some distinct kind of mental
activity. From the practical science point of view every thought causes
its particular bodily effects._

This is true of simple sensations. It is true of impulses, ideas and
emotions. It is true of pleasures and pains. It is true of conscious
mental activity. It is true of unconscious mental activity. It is true
of the whole range of mental life.

Since the mental conditions that produce bodily effects are not limited
to those mental conditions in which there is a conscious exercise of the
will, it follows that _the bodily effects produced by mental action are
not limited to movements of what are known as the voluntary muscles._

On the contrary, they include changes and movements in all of the
so-called involuntary muscles, and in every kind of bodily structure.
They include changes and movements in every part of the physical
organism, from changes in the action of heart, lungs, stomach, liver
and other viscera, to changes in the secretions of glands and in the
caliber of the tiniest blood-vessels. A few instances such as are
familiar to the introspective experience of everyone will illustrate the
scope of the mind's control over the body.

[Sidenote: Bodily Effects of Emotion]